Uses

Principal Proposed Uses

Other Proposed Uses

The herb horehound has been used since Roman times as a treatment for coughs and other respiratory problems, as well as rabies. It was popular among Native North Americans as well. Teas and syrups of horehound continued to be used through the nineteenth century for coughs and lung complaints, as well as for menstrual problems. Although the herb itself has a strong bitter taste, horehound candy is considered pleasant by some, and it is still available in traditional candy stores.

What is Horehound Used for Today?

Horehound is recommended by some current herbalists as a treatment for
cough
,
asthma
, and
sore throat
. In addition, like other bitter herbs, horehound is thought to enhance appetite, and
Germany’s Commission E
has approved it for this use. However, there is no reliable scientific evidence to support these uses. Only
double-blind
, placebo-controlled studies can prove a treatment effective, and none have been performed on horehound. (For information on why such studies are essential, see
Why Does This Database Rely on Double-blind Studies?
)

It is commonly stated that horehound loosens bronchial mucous, but there is no meaningful evidence to support this claim. Very weak evidence (far too weak to be relied upon at all), hints that horehound or its constituents marrubenol and marrubiin might have smooth-muscle relaxant,
1antidiabetic
,
2,3blood pressure–lowering
,
4
and nonnarcotic pain-reducing effects.
5

Dosage

A typical dose of horehound is 1.5 grams three times daily of the dry herb or 2–6 tablespoons daily of the pressed juice.

Safety Issues

Horehound is thought to be relatively nontoxic, but it has not undergone any meaningful safety study. Horehound is traditionally not recommended for use by pregnant women. Safety in young children, nursing women, or people with severe liver or kidney disease has not been evaluated.

Revision Information

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.